在向硬件 RAID 添加新磁盘后，我尝试扩展 /dev/sda3/ 分区，但在 resize2fs 之后失败：
[root@server5 ~]# resize2fs -f /dev/sda3
resize2fs 1.41.12 (17-May-2010)
Filesystem at /dev/sda3 is mounted on /; on-line resizing required
old desc_blocks = 47, new_desc_blocks = 93
Performing an on-line resize of /dev/sda3 to 388385366 (4k) blocks.
resize2fs: Operation not permitted While trying to add group #6016
但让我们从头开始
我使用 fdisk 成功重新创建了分区（原始大小约为 800gb RAID1，现在约为 1.5tb RAID5）
Disk /dev/sda: 1600.3 GB, 1600264691712 bytes
255 heads, 63 sectors/track, 194554 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0006ce84
Device Boot Start End Blocks Id System
/dev/sda1 * 1 128 1024000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 128 1148 8192000 82 Linux swap / Solaris
/dev/sda3 1148 194555 1553541464 83 Linux
之后我在 /dev/sda3 上使用 partprobe 并且一切似乎都成功了（至少通过 lsblk ）
[root@server5 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.5T 0 disk
├─sda1 8:1 0 1000M 0 part /boot
├─sda2 8:2 0 7.8G 0 part [SWAP]
└─sda3 8:3 0 1.5T 0 part /
之后我尝试使用 resize2fsk，但失败了。我还在重启时运行了 forcefsck，但没什么帮助。似乎有足够的 GDT 块
[root@server5 ~]# tune2fs -l /dev/sda3
tune2fs 1.41.12 (17-May-2010)
Filesystem volume name: <none>
Last mounted on: /
Filesystem UUID: 790fa126-9bf9-41d6-90e1-f720dfbc4663
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 49283072
Block count: 197132288
Reserved block count: 9856614
Free blocks: 21290170
Free inodes: 49192326
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 977
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Mon Jan 29 00:08:33 2018
Last mount time: Wed Jan 19 05:28:55 2022
Last write time: Wed Jan 19 09:54:25 2022
Mount count: 1
Maximum mount count: -1
Last checked: Wed Jan 19 05:28:47 2022
Check interval: 0 (<none>)
Lifetime writes: 228 TB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
First orphan inode: 16121861
Default directory hash: half_md4
Directory Hash Seed: dff51d0c-ebe2-444e-9262-ffe391307277
Journal backup: inode blocks
Seems like there is enough GDT blocks
DF -h 输出
[root@server5 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 741G 659G 44G 94% /
tmpfs 48G 0 48G 0% /dev/shm
/dev/sda1 969M 38M 881M 5% /boot
tmpfs 1.0G 0 1.0G 0% /ramdrive_session
FS 允许调整大小，
[root@server5 ~]# dumpe2fs /dev/sda3 | grep -i features
dumpe2fs 1.41.12 (17-May-2010)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Journal features: journal_incompat_revoke
日志大小看起来不错：
[root@server5 ~]# dumpe2fs /dev/sda3 | grep ^Journal
dumpe2fs 1.41.12 (17-May-2010)
Journal inode: 8
Journal backup: inode blocks
Journal features: journal_incompat_revoke
Journal size: 128M
Journal length: 32768
Journal sequence: 0xc8213ff3
Journal start: 2327
所以我完全陷入困境并寻求你的帮助。如何正确地向 /dev/sda3 分区添加空间？谢谢你的关注
答案1
鉴于这是 resize2fs 1.41.12，我猜你运行的是 CentOS 6。除了查找可用的 GDT 块之外，还有其他事情需要检查：
简而言之：
检查你的 FS 是否允许调整大小：
dumpe2fs /dev/vg_test/lv_ext3 | grep -i features
您应该会发现“调整 inode 大小“ 在输出中。
另外，您的 FS 日志大小可能太小，无法进行在线调整，因此您需要离线并执行以下步骤：https://access.redhat.com/solutions/2723901